Process for making test paper used for acceptance test of transport oil container after washing
A preparation process and container technology, applied in the field of test paper preparation technology for acceptance, can solve the problems of inability to measure the rust degree of oil storage containers, discoloration lag, inconspicuous gradient color difference, etc., and achieves convenient test use, simple formula, and preparation process. handy effect
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[0017] Its preparation process embodiment is as follows:
[0018] Select a wood pulp microporous quantitative filter paper with a thickness of 0.1mm, compactness, fiber distribution and air permeability that is easy to be consistent, put it on a paper cutter, cut it into strips with a width of 50mm, and use 0.2 grams of methyl red, ethyl red After mixing 0.2 grams and 1.2 grams of bromothymol blue, dissolve in 1000ml of 30% alcohol solution, let it stand for 30 minutes, filter with a 5 micron glass sand funnel, and then cut into 50mm wide strips of micropores to quantify Put the filter paper into the above-mentioned filtered solution, soak for 6 minutes, take out the soaked microporous quantitative filter paper, rinse once with distilled water containing a small amount of dilute HCl, PH=5.5, and then put it in an electric oven to dry at 45°C, time 5 minutes, and finally cut into 60mm long test paper in a paper cutter, inspect and pack.
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